交直流混合电网10kV直流侧两极短路过电压仿真分析

Simulation and analysis of two pole short circuit overvoltage at 10kV DC side of AC-DC hybrid power grid

随着分布式能源、直流储能设备的不断发展以及直流负荷的广泛应用,交直流配电网成了国内外研究、应用的热点课题和发展方向。本文分析了一种交直流混合交直流混合电网系统故障特性分析以及两端柔性直流配电系统模型建立建立。在Matlab/Simulink环境中,对10kV直流系统两极短路故障过电压进行仿真了分析,为提出相应的过电压抑制措施提供借鉴。

with the continuous development of distributed energy,DC energy storage equipment and the wide application of DC load,AC and DC distribution network has become a hot topic and development direction of research and application at home and abroad.This paper analyzes the fault characteristics of an AC-DC hybrid power system and the establishment of a flexible DC distribution system model at both ends.In Matlab/Simulink environment,the overvoltage of 10kV DC system with two pole short circuit fault is simulated and analyzed,which provides reference for the corresponding overvoltage suppression measures.